1 Which is a cyclic behavior of movement from one environment to another?

A migration
B hibernation
C imprinting
D conditioning


2 An opossum is an animal that is known to "play dead” when threatened by other animals.

This is an example of a response to which kind of stimulus?

A the external stimulus of tiredness
B the internal stimulus of illness
C the external stimulus of danger
D the internal stimulus of predators


3 Which is an example of an instinct?

A rabbit hides when it observes a predator.
B dog wags its tail when it hears a doorbell ring.
C boy pulls his hand away after touching a hot surface.
D dolphin swims through a hoop during an amusement park show.